nodejs request library, get the response time

Is it possible to get the response time on the callback?
The doc mentions response.statusCode. looking at the library source code I also see undocumented response.headers and response.href, but I don't see responseTime or similar.

or, is there an alternative library to

request

that provides the response time?

ps: I know I could do something like this, but that's not a solution, as I am making many async requests and I cannot control when each request will be started.